Inside the Chobham bungalow: a vaulted kitchen with rooflights, opening through to the dining room and folding doors to the garden

Planning changes to your home shouldn't feel risky.

Most homeowners don't struggle with ideas. They struggle with knowing what to do first. We help you get clear before you commit, so decisions feel calm, costs make sense and nothing spirals later.

Book a free 15-minute Clarity Call (opens in a new tab)

Approach

Big ideas. Serious money. A lot of unanswered questions.

Most people come to us excited, and quietly uneasy. They are thinking things like:

  • “Do we actually need planning, or are we assuming?”
  • “Is this worth the money, or are we forcing it?”
  • “How much does this really cost once everything's included?”
  • “What if we start, and then realise we've made a mistake?”

Builders say one thing. Friends say another. Searching online just makes it noisier. That hesitation is sensible. It's also exactly where projects go wrong, because most renovation stress doesn't come from the building work. It comes from decisions made too early, without enough information.

“It's not really about design. It's really about what order decisions should happen in.”

  1. 01

    A free 15-minute Clarity Call

    We talk through where you are and what you're trying to achieve. You come away knowing the sensible next step, even if that step is to wait.

  2. 02

    The Clarity Pack

    Before anyone commits to drawings or builders, we test what's realistically achievable on your home: layouts, planning, structure and cost bands, with a written recommendation and a roadmap.

  3. 03

    Design, planning, drawings and the build

    Only once the direction is clear do we design it properly, take it through planning, draw it for the builder and, if you want us there, support you on site. You decide at each stage whether to carry on.

Our process, stage by stage

The Clarity Pack

Know what's possible before you spend serious money

Most homeowners don't regret spending money on their home. They regret spending it in the wrong order.

The Clarity Pack is the step before drawings, planning or builders. James visits, measures up and talks it through with you both, then over 3 to 4 weeks we test the layouts, the planning position, the structure and the likely cost, and give you a written recommendation and a roadmap.

 

Clarity Pack Complete

£2,950 + VAT

£750 comes off the next stage if you go ahead within six months.

Recommended

Clarity Pack Plus

£2,250 + VAT

£500 comes off the next stage if you go ahead within six months.

 

Clarity Pack

£1,500 + VAT

£250 comes off the next stage if you go ahead within six months.

The measured survey sits outside every level and is paid to the surveyor directly. No obligation to go ahead, and no obligation to go ahead with us if you do.

What the Clarity Pack includes

Budget tool

What will it really cost?

The builder's number isn't the project cost. Put in your floor area and see the whole figure, layer by layer: the build, contingency, VAT, the kitchen and bathrooms, and what is still left to count.

Try the budget tool

The record

  • 150+projects since 2020
  • 98%of sites gained planning permission in the end
  • 28planning authorities worked with
  • 9 of 9approved in AONBs (National Landscapes) and National Parks

Planning figures cover 108 decisions on 81 sites, March 2020 to October 2026, from council notices and our own records. Three appeals were allowed. How the record is counted.

No architect can promise a planning outcome, and we won't. What we can do is read the policy and the local decisions properly, name the risks early, and shape the scheme so it has the best chance.

Accreditations

  • RIBA Chartered Practice
  • ARB registered architect, registration number 088216J
  • AECB member

Where we work

Mostly Surrey, within reach of Woking

Most of our work is within a short drive of the office in Woking: Woking, Guildford, Elmbridge and the towns and villages around them, with the occasional project further afield.

Where we have workedA map of Surrey and the surrounding counties with a dot for each postcode district where James Williamson Architects has worked, clustered around Woking and Guildford.GU21, Surrey HeathGU22, WokingGU24, GuildfordGU1, GuildfordGU2, GuildfordGU4, GuildfordRH14, ChichesterGU10, East HampshireGU3, GuildfordGU9, WaverleyGU15, Bracknell ForestGU5, GuildfordKT15, RunnymedeKT16, RunnymedeKT21, Mole ValleyKT22, ElmbridgeKT24, GuildfordRG4, ReadingSL5, Bracknell ForestSL6, BuckinghamshireBN1, Brighton and HoveBN21, EastbourneBN25, LewesBN3, Brighton and HoveCR0, CroydonCR4, CroydonE17, Waltham ForestEC1R, CamdenGU23, GuildfordGU33, ChichesterGU34, Basingstoke and DeaneGU35, East HampshireGU6, ChichesterGU7, GuildfordHA4, HarrowKT11, ElmbridgeKT13, ElmbridgeKT20, Mole ValleyKT6, ElmbridgeKT8, ElmbridgeNW9, BarnetPO18, ArunPO19, ChichesterPO20, ArunPO9, ChichesterRG1, ReadingRG10, Bracknell ForestRG12, Bracknell ForestRG5, ReadingRG6, ReadingRG8, South OxfordshireRH1, Reigate and BansteadRH12, HorshamRH13, HorshamRH19, Mid SussexRH20, ChichesterRH3, Mole ValleyRH6, CrawleySE20, BromleySM4, MertonSW14, Richmond upon ThamesSW18, MertonTN3, SevenoaksTN4, Tonbridge and MallingTW12, Richmond upon ThamesTW2, HounslowTW20, RunnymedeUB10, Hillingdon
Each dot is a postcode district where we have worked; larger dots, more projects. Locations are shown by district only. Further afield: Cheltenham, Cherwell, County Durham, West Devon, Wiltshire. Map data © OpenStreetMap contributors.
James Williamson

About

I'm James, a RIBA Chartered architect based in Woking.

Most of my clients haven't done this before. My job is to help them avoid the mistakes that only become obvious after money has been spent.

That means being honest about what works, what doesn't, and when it's better to pause rather than push ahead.

No hype. No pressure. Just clear thinking and sound judgement, from someone who does this every day.

James Williamson BA(Hons), MArch, PGDip, ARB, RIBA, Architect & Director

More about James and the practice

“It's changed how we live. We still regularly have to pinch ourselves.”

Jeremy and Mary-Jane, Guildford

Words from clients

14 Google reviews, all five stars

  • “James took our initial thinking and came back with some fantastic designs, challenged our thinking and rescoped areas where needed.”

    Jeremy, downstairs renovation · Google review · October 2024
  • “He listened to our thoughts and preferences, took time to answer questions really clearly and show us options, before we agreed on a final plan.”

    Heather · Google review · October 2024
  • “Clear, concise design and drawings made the construction process extremely smooth.”

    Tom · Google review · January 2025
  • “…fantastic design proposals and great imagery to help us visualise the different options. The technical drawings he prepared were very accurate which helped make the build process as straightforward as it could be.”

    Joseph, wraparound extension · Google review · June 2023
  • “…James listened attentively, understood the brief well and produced an imaginative design which used the limited space available to its best advantage.”

    Sally, bungalow · Google review · June 2023
  • “…worked for us after we had a poor experience with another architect. James was quick, thorough and a delight to deal with.”

    Sam · Google review · October 2023
  • “Lots of wow factor in the design & we are very pleased with the results.”

    Ross and Daniella, bungalow · Google review · October 2024
  • “In the nearly 40 years I’ve been working in the construction industry I have worked with and for many good architects. James Williamson Architects trumps them all.”

    Shaun, bricklayer and general builder · Google review · June 2023

Read all the reviews on Google

The cover photograph of Your Dream Home: a bright kitchen extension in Walthamstow

Free guide

Your Dream Home

Thirty-eight pages on getting the order right: the five mistakes to avoid, what it costs in Surrey, planning and timescales, with two worksheets to fill in.

Get the free guide

Contact

Start with a conversation

The quickest way to start is the free 15-minute Clarity Call with James. We talk through where you are, what you are trying to achieve and what the sensible next step looks like. No pressure and no obligation.

Book a free 15-minute Clarity Call (opens in a new tab)

No selling. Just a clear view on the smartest next step.

Or write to james@jameswilliamson.archi
Unit 6 Albion House, High Street, Woking GU21 6BG

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Accreditations

  • RIBA Chartered Practice
  • ARB registered architect, registration number 088216J
  • AECB member